A quadratic function f(x) is hidden from view. You must find all intervals where f(x) is increasing. Choose the form of the quadratic function f(x) that you would like to see in order to answer the question most efficiently

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

Set square i think so